64628288 has 56 divisors (see below), whose sum is σ = 136940544. Its totient is φ = 30156800.

The previous prime is 64628231. The next prime is 64628293. The reversal of 64628288 is 88282646.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207653 + ... + 207963.

Almost surely, 2^64628288 is an apocalyptic number.

64628288 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64628288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68470272).

64628288 is an abundant number, since it is smaller than the sum of its proper divisors (72312256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64628288 is a wasteful number, since it uses less digits than its factorization.

64628288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 521 counting only the distinct ones).

The product of its digits is 294912, while the sum is 44.

The square root of 64628288 is about 8039.1720966776. The cubic root of 64628288 is about 401.3046732758.

The spelling of 64628288 in words is "sixty-four million, six hundred twenty-eight thousand, two hundred eighty-eight".